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Eight wires cut the page perpendicularly at the points shown in Fig. below. A wire labelled by the integer k (k= 1, 2, . . . , 8) carries the current ki, where i = 4.58 mA. For those wires with odd k, the current is out of the page; for those by even k, it is into the page. Evaluate along the closed path in the direction shown.
A pulse from a ruby laser (lambda = 694.3 nm) has an average power of 30 MW and lasts 2.9 ns. How many photons are emitted in this pulse
a charged particle is injected at 211 m/s into a 0.0627- T uniform magnetic magnetic field perpendicularly to the field, What is the charge to mass ratio of this particle
A river steamboat travels 36 miles downstream in the same time that it travels 24 miles upstream. What is the currents speed
The velocity vs. time curve of an object is an increasing straight line. What is the acceleration of the object
Two-dimensional collisions may be studied by using an air table (similar to an air hockey game) instead of the method we used. Find the velocity (magnitude and direction with respect to east) of the combined mass after the collision
Air streams horizontally past a small airplane's wings such that the speed is 62.0 m/s over the top surface and 52.0 m/s past the bottom surface. What is the direction of the net vertical force on the airplane
A planet orbits a star, in a year of length 2.77 x 107 s, in a nearly circular orbit of radius 3.38 x 1011 m. determine the angular speed of the planet
The Space Shuttle travels at a speed of about 7.60 103 m/s. The blink of an astronaut's eye lasts about 110 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?
a 2.2mm -diameter glass bead is positively charged. the potential difference between a point 2.3mm from the bead and a
A glass lens has a scratch-resistant plastic coating on it. The speed of light in the glass is 0.659c, At what angle with respect to the normal is the ray transmitted
A woman stands 2.0 m in front of a convex mirror and notices that her image height is 1/4 of her actual height. Determine the radius of curvature of the mirror
A thin 320g disk with a diameter of 5.20 cm rotates about an axis through its center with 0.705J of kinetic energy. What is the speed (in m/s) of a point on rim.
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